Effect of Zr4+ content on the TC range and dielectric and ferroelectric properties of BaZrxTi1−xO3 ceramics prepared by microwave sintering

Pu, Yongping; Dong, Zijing; Hu, Yao; Liu, Xiaoyan; Wang, Peikui

doi:10.1016/j.ceramint.2013.09.069

Cited by 36 publications

(13 citation statements)

References 17 publications

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“…However these permittivities remain higher than those reported by Rabuffetti et al, since in the later case only room temperature permittivity values of pressed compacts have been reported (ε r in the range 10-70 according to the composition) [5,6,14,43,47,[49][50][51]. This is in good agreement with the high density of the obtained nanostructured ceramics.…”

Section: Compositionsupporting

confidence: 85%

“…Still, this method encounters limitations for producing the BaZrO 3 -rich region of the solid solution [8][9][10]. In this context, alternative methods have been developed such as the chemical solution deposition [4,11], the hydrothermal [12][13][14], the direct synthesis from solution [15], or the sonochemical one [16], but the synthesis in the BaZrO 3 -rich region remains a challenge. Among these methods only the one based on a modified vapour diffusion sol-gel process, is reported as enabling the synthesis of BTZ nanocrystals over the entire solid solution [6,[17][18][19].…”

Section: Introductionmentioning

confidence: 98%

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Continuous BaTi1−yZryO3 (0≤y≤1) nanocrystals synthesis in supercritical fluids for nanostructured lead-free ferroelectric ceramics

et al. 2015

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Section: Compositionsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 98%

Continuous BaTi1−yZryO3 (0≤y≤1) nanocrystals synthesis in supercritical fluids for nanostructured lead-free ferroelectric ceramics

et al. 2015

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“…In isotropic perovskite ferroelectric materials, substituting with bigger sized A‐site ions or smaller B‐site ions generally gives rise to a higher T c . For example, the T c of Ba x Sr 1 ‐x TiO 3 increases linearly with increasing x , and a lower Zr/Ti ratio results in a higher T c in BaZr x Ti 1‐ x O 3 system . However, in layer‐structured perovskites, some authors have demonstrated that the smaller sized ions substituting the larger one at A‐sites effectively induce the increase in T c , which has been ascribed to the decrease in tolerance factor t [ t = (r A + r O )/(r B + r O ) 1/2 ] .…”

Section: Resultsmentioning

confidence: 99%

Photoluminescence, Structural, and Electrical Properties of Erbium‐Doped Na_0.5Bi_4.5Ti₄O₁₅ Ferroelectric Ceramics

Jiang

Chen

et al. 2016

J. Am. Ceram. Soc.

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Structural, electrical, and up-conversion (UC) properties of Na 0.5 Bi 4.5-x Er x Ti 4 O 15 (NBT-xEr 3+ ) (0.00 < x < 0.40) ceramics have been studied. All the ceramic samples possessed a single-phase orthorhombic structure. The unit cell volume, the lattice parameters a, b, and c, and orthorhombic distortion analyzed on the basis of Rietveld refinement were observed to decrease with increasing Er 3+ contents (x). The average values of grain size were found to slightly decrease with increasing x. Raman spectroscopy revealed that (Bi 2 O 2 ) 2+ layers remained unaffected in the modified compositions, and Er 3+ substitution for Bi 3+ occurred predominantly at the A-site in the perovskite blocks causing the cationic disorder and a slight decrease in the TiO 6 octahedral distortion. NBT-xEr 3+ ceramic with x = 0.20 achieved the optimized photoluminescence. The relative intensity of green and red UC emissions could be tuned by changing Er 3+ ions concentrations. Ferroelectric measurements revealed that Er 3+ doping led to reduction in 2P r and 2E c . However, dielectric measurements showed that the incorporation of Er 3+ ions increased T c with simultaneously lowered tand at high temperature, implying that this ceramics can be suitable for high-temperature sensor applications.

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“…Barium titanat (BaTiO 3 ) merupakan salah satu material ferroelektrik yang memiliki konstanta dielektrik tinggi dan tingkat kebocoran energi rendah sehingga banyak diaplikasikan dalam bidang elektronika seperti Dynamic Random Access Memories (DRAM), Ferroelectric Random Access Memories (FRAM), Controllers, sensor PCTR, detektor piroelektrik, perangkat pembangkit sinyal, dan kapasitor [2][3][4].…”

Section: Pendahuluanunclassified

Pengaruh Doping Zirkonium (Zr) pada Konstanta Dielektrik dan Struktur Kristal BaZrxTi1−xO3

Nisa

Jamaluddin

Iriani

2016

JFA

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IntisariBarium zirkonium titanat (BaZrxTi1−xO3) dengan variasi mol dopan zirkonium (x) sebanyak 0,01 mol; 0,02 mol; dan 0,03 mol telah disintesis menggunakan metode reaksi fasa padat. Sampel disintering pada temperatur 1100• C dengan waktu tahan selama 2 jam. Sampel dikarakterisasi menggunakan instrumen XRD dan RLC meter untuk mengetahui pengaruh doping terhadap struktur kristal dan konstanta dielektrik BaZrxTi1−xO3. Hasil analisis XRD menunjukkan bahwa BaZrxTi1−xO3 memiliki struktur kristal tetragonal dengan a = b = c. Ukuran kristal BaZrxTi1−xO3 pada x = 0,01; x = 0,02; dan x = 0,03 masing-masing adalah 34 nm, 33 nm, dan 38 nm. Pengukuran RCL meter diperoleh konstanta dielektrik sebesar 331, 522, dan 641. AbstractBarium zirconium titanate (BaZrxTi1−xO3) with mole variations of zirconium (x) dopant at x = 0.01; x = 0.02; and x = 0.03 has been fabricated by solid state reaction method. Sintering temperature was done at temperature 1100• C with holding time for 2h. Sample was characterized with XRD instrument and RLC meter to determine the effects of doping on the crystal structures and dielectric constant of BaZrxTi1−xO3. The result of XRD analysis showed that BaZrxTi1−xO3 has a tetragonal structure with a = b = c. Crystalline size of BaZrxTi1−xO3 at x = 0.01; x = 0.02; and x = 0.03 are 34 nm, 33 nm, and 38 nm. RLC meter measurement obtained the dielectric constant are 331, 522, and 641, respectively.

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Effect of Zr4+ content on the TC range and dielectric and ferroelectric properties of BaZrxTi1−xO3 ceramics prepared by microwave sintering

Cited by 36 publications

References 17 publications

Continuous BaTi1−yZryO3 (0≤y≤1) nanocrystals synthesis in supercritical fluids for nanostructured lead-free ferroelectric ceramics

Continuous BaTi1−yZryO3 (0≤y≤1) nanocrystals synthesis in supercritical fluids for nanostructured lead-free ferroelectric ceramics

Photoluminescence, Structural, and Electrical Properties of Erbium‐Doped Na_0.5Bi_4.5Ti₄O₁₅ Ferroelectric Ceramics

Pengaruh Doping Zirkonium (Zr) pada Konstanta Dielektrik dan Struktur Kristal BaZrxTi1−xO3

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Effect of Zr4+ content on the TC range and dielectric and ferroelectric properties of BaZrxTi1−xO3 ceramics prepared by microwave sintering

Cited by 36 publications

References 17 publications

Continuous BaTi1−yZryO3 (0≤y≤1) nanocrystals synthesis in supercritical fluids for nanostructured lead-free ferroelectric ceramics

Continuous BaTi1−yZryO3 (0≤y≤1) nanocrystals synthesis in supercritical fluids for nanostructured lead-free ferroelectric ceramics

Photoluminescence, Structural, and Electrical Properties of Erbium‐Doped Na0.5Bi4.5Ti4O15 Ferroelectric Ceramics

Pengaruh Doping Zirkonium (Zr) pada Konstanta Dielektrik dan Struktur Kristal BaZrxTi1−xO3

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Photoluminescence, Structural, and Electrical Properties of Erbium‐Doped Na_0.5Bi_4.5Ti₄O₁₅ Ferroelectric Ceramics